中国农业气象

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山西省1949~1988年气象产量指数分布特征及其与气候条件的关系

李南声;胡慧敏;   

  1. 山西省气象科学研究所,山西省气象科学研究所,
  • 出版日期:1993-08-10 发布日期:1993-08-10
  • 基金资助:
    本文为山西省科委攻关项目“山西气象灾变的灾害学研究”的报告之一

The Feature of The I_(DW) and its Relationship With Climatic Condition During 1949~1988, Shanxi, China

Li Nansheng Hu Huimin(Shanxi Institute of Meteorology)   

  • Online:1993-08-10 Published:1993-08-10

摘要: 以气象产量指数指示气候条件对粮食生产的影响,分析了山西省1949~1988年气象产量指数时空分布特征及其与气候条件的关系,发现山西气象产量指数极差大、变幅大,与降水相关密切,涝或偏涝年均可获正常以上收成,反之旱或偏旱年则多数减产.与气温关系不密切且为反相关.可见,山西气候状况降水较少、平均雨量不敷农业需求,是制约农业生产的根本因素.山西多样的气候使得气象产量变化也呈多样性,一些区域与另一些区域(面积比约为4∶6)为反相关,由于这种互补性使山西难以形成全省性灾害.

关键词: 产量分析, 气候条件, 气象产量指数

Abstract: In this paper, using the weather yield index (low) which shows the influence on the grain producing, a study on the I_(DW) feature in space and time and its relationship with climatic condition during 1949~1988 in Shanxi is obtained. The following chatacters are found: The range and amplitude of I_(DW) get larger. I_(DW) correlates with precipitation closely but weakly and negatively with temperature. It is the essential factor restricting the grain producing that the climatic precipitation is smaller than the agriculture's need. I_(DW) in some areas correlate oppositely with others as a result of this reason the grain yield has been compensated each other in Shanxi. It is an advantage which make up for the shortcoming of climate. The department concerned should pay great attention to these change and feature in climate and I_(DW).

Key words: NULL, NULL